simono41/picture-uploader
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add new imageHandler

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This commit is contained in:
Simon Rieger 2024-03-08 15:32:44 +01:00
parent 08814b0e82
commit 123433d156
2 changed files with 46 additions and 1 deletions
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35
go/main.go
View file

@ -21,6 +21,7 @@ var (
func main() { func main() {
http.HandleFunc("/", homeHandler) http.HandleFunc("/", homeHandler)
http.HandleFunc("/upload", uploadHandler) http.HandleFunc("/upload", uploadHandler)
http.HandleFunc("/image/", imageHandler)
http.HandleFunc("/view/", viewHandler) http.HandleFunc("/view/", viewHandler)
fmt.Println("Server listening on :8080") fmt.Println("Server listening on :8080")
@ -153,7 +154,7 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
} }
} }
func viewHandler(w http.ResponseWriter, r *http.Request) { func imageHandler(w http.ResponseWriter, r *http.Request) {
filePath := r.URL.Path[len("/view/"):] filePath := r.URL.Path[len("/view/"):]
imagePath := "./uploads/" + filePath imagePath := "./uploads/" + filePath
@ -173,3 +174,35 @@ func viewHandler(w http.ResponseWriter, r *http.Request) {
return return
} }
} }
func viewHandler(w http.ResponseWriter, r *http.Request) {
filePath := r.URL.Path[len("/view/"):]
imagePath := "./uploads/" + filePath
// Überprüfen, ob die Bilddatei existiert
if _, err := os.Stat(imagePath); os.IsNotExist(err) {
http.Error(w, "Bild nicht gefunden", http.StatusNotFound)
log.Printf("Bild nicht gefunden: %v", err)
return
}
// Verwenden von html/template zur sicheren Ausgabe von HTML
tmpl, err := template.ParseFiles("templates/viewImage.html")
if err != nil {
http.Error(w, "Fehler beim Laden des Templates", http.StatusInternalServerError)
log.Printf("Fehler beim Laden des Templates: %v", err)
return
}
data := struct {
Filename string
}{
Filename: filePath,
}
err = tmpl.Execute(w, data)
if err != nil {
http.Error(w, "Fehler beim Rendern des Templates", http.StatusInternalServerError)
log.Printf("Fehler beim Rendern des Templates: %v", err)
}
}

12
templates/viewImage.html Normal file
View file

@ -0,0 +1,12 @@
<!DOCTYPE html>
<html>
<head>
<title>Bild anzeigen</title>
</head>
<body>
<h1>Bildanzeige</h1>
<!-- Verwenden des neuen Handlers für die Bild-URL -->
<img src="/image/{{.Filename}}" alt="Hochgeladenes Bild">
<p><a href="/">Zurück zum Upload</a></p>
</body>
</html>